Konatsu, a cheerful female student, fully enjoys her long-awaited school trip with her classmates, but ends up breaking an expensive-looking pot at the inn she's staying at. Tsubasa, a very scary female teacher, is ordered to sleep alone in a separate room as punishment. When the night was late, a hand crept up from under the futon and fondled her breasts. When Konatsu woke up, he saw Tsubasa-sensei, who had been angry until just now, playing with her nipples. Konatsu, who can't even make a sound due to fear and pleasure, has both her breasts and pussy licked and is made to cum. The next day, Konatsu, who has a complex about big boobs, goes to a hot spring alone apart from her friends, but Tsubasa-sensei, who has big boobs, shows up...